MCQ
Magnification of an optical instrument is expressed in:
- Am
- Bm−1
- CD
- DIt has no unit
✓
Answer
- It has no unit
Explantion:
$\text{Magnification}=\frac{\text{Image Height}}{\text{Object Height}} $
because unit of image height and object height is same hence unit of magnification is none because it is a constant number. So, it has got to unit.
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